Holt.Blue

BBC News and The New York Times are...
Remarkably Similar!

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Well, not entirely, of course. But we did notice some unexpected overall similarities between both online publications with respect to quantitative aspects of their news articles.
We originally set out to see if we could get a handle on the question of whether or not British publications use semicolons more than U.S. publications. But, as the reader can imagine, to do such a topic justice requires a little more effort than simply finding a few news articles online. (However, such a piece is in the works.)
We considered the top stories on the homepages of both BBC News and The New York Times for Sunday, September 27th, 2015.
Sports and opinion pieces were not considered. Moreover, anything that didn't resemble "news" was also not considered. Links to stories similar or relevant to the top stories were also ignored. In total we analyzed 9 top-story articles from the N.Y. Times and 10 top-story articles from BBC News.
The word length distributions of our sample were remarkably similar.
Average Word Length Median Word Length Standard Deviation of Word Length
BBC 4.92 4 2.67
NY Times 4.94 4 2.7
Likewise the sentence length distributions of were also quite similar with the exception that there was substantially more variation in sentence length in the The NY Times articles.
Average Sentence
Length
Median Sentence
Length
Standard Deviation of
Sentence Length
BBC 21.25 20.5 8.56
NY Times 21.34 20 12.25
The readability of both samples were also strikingly similar.
Readability Index Grade Level BBC Grade Level NY Times
Gunning fog 15.23 14.85
Flesch-Kincaid 11.94 11.62
SMOG 13.94 13.61
Coleman-Liau 12.59 12.93
Automated 13.02 13.36
Both the median and the average readability score for both publications was 13th grade (college freshman).
Not surprisingly, the average lexical density of both samples was fairly high with BBC News and The NY Times respectively scoring 55.99% and 57.94%.

Concluding Remarks

First and foremost, we acknowledge that our "sample" is hardly scientific in the sense that it's non-random. However, it is repeatable and it would be interesting to hear from readers who have tried something similar. Do you get similar results when you try the experiment?
We also caution the reader that we shouldn't consider our sample of articles as being representative of British and U.S. journalism in general. At best our sample is representative of only BBC News and the New York Times, and even then, it's a quite a stretch to say our sample is representative of these publications at all. Our "survey," if the reader prefers to call it that, was very informal and no real general conclusions can be made upon it.
This is not to say that we wasted our time, however, as the results are quite suggestive. Our experiment raises some interesting questions. By taking a truly scientific, random sample of news articles from both these publications, would we get similar results? Moreover, do similar patterns hold, both across other news outlets and other English speaking countries? Namely, Australia and Canada. (How would we collect such a sample?)
Finally, semicolon usage, contrary to expectation, was leaner among the BBC articles than The NY Times articles with a rate of about 13 semicolons per 1000 sentences for The Times and 6 semicolons per 1000 sentences for BBC News.
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Links and References

Holt.Blue Article: What is a Readability Index?
Holt.Blue Article: Lexical Density.
BBC News Homepage
The New York Times Homepage